Due to some promotional and managerial disputes and divorce, Espinosa was left with little. He had to take jobs washing dishes, stocking shelves, flipping burgers and cleaning carpets in the US. Espinosa, who was out of the boxing scene for quite a while, entered the
mixed martial arts (MMA) scene by training brothers
Nick Diaz and
Nate Diaz in boxing to improve their stand-up. He also assisted in the training of the
University of San Francisco's Boxing team from 2006-2007 in preparation for the annual Hilltop Cup. After losing his job in the US he was invited to work in Hong Kong as a boxing trainer at the Everlast Fight and Fitness Gym and moved in November 2014. On June 16, 2015, after 17 years, he won a case for prize money that was owed to him his by the promoters of his WBC featherweight title defense against
Argentine Carlos Rios. In 2017, he moved to the Everlast Gym as a boxing trainer in downtown
Dalian city in mainland
China. When he returned to the Philippines, he was added as cast of ''
FPJ's Batang Quiapo'', as Roberto. == Professional boxing record ==